William w



(No Model.)

W. W. HUNTLBY.

' GRAIN SGOURBR.

No. 541,235. Patented June J18,1895.

72; 2*. @M /1 KW UNITED STATES PATENT. OEEICE.

WILLIAM YV. HUN TLEY, OF SILVER CREEK, NEV YORK, ASSIGNOR, BY MESNEASSIGNMENTS, 'lO THE HUNTLEY MANUFACTURING COMPANY, SAME y PLACE.

GRAIN-SCOURER.

SPECIFICATION forming part of Letters Patent No. 541,235, dated June18,1895,

Application filed October 29. 1892. Serial No. 450.320. (No model.)

To @ZZ whom, t may concern:

Be it known thatI, WILLIAM W. HUNTLEY, a citizen of the United States,residing at Sil-V ver Creek, in the county of Chautauqua and State ofNew York, have invented new and useful Improvements in Grain-Scourers,of which the following is a specification.

This invention relates to grain scourers which consist essentially of aperforated hori* [o zontal scouring case through which the grain passes,a toothed scouring drum revolving in the scouring case,`a tight caseinclosing the perforated scouring case and forming an air passage aroundthe latter, and a fan drawing i 5 an air current through said passage,such, for instance, as the machine which is shown and described inLetters Patent No. 407,7 22, dated July 23, 1889.

The object of my invention is to provide zo means for a more speedy andcomplete removal of the dust and other light impurities which aredetached from the grain in the scouring cylinder.

In the accompanying drawings, Figure lis z5 a longitudinal sectionalelevation of my im` proved scouring-machine. Figs. 2 and 3 are verticaltransverse sections, on an enlarged scale, in lines 2 2 and 3 3, Fig. 1,respectively.

Like letters of reference refer to like parts 3o in the several figures.

A represents the stationary main frame of the machine, B the preliminaryseparating screen, and C the separating wind trunk through which thegrain passes from the screen B to the feed hopper D.

E represents the horizontal shaft journaled in bearings e e secured tothe Vframe A, and carrying near one end the fan blades E which rotatewithin a case 4o F represents the scouring drum secured to the shaft E,and provided on its outer surface with inclined teeth f, whereby thegrain is agitated and conveyed toward the tail end of the machine.

G is the perforated scouring case surrounding the scouring drum, andsupported upon the main frame by front and rear heads G G2.

H representsthe tight casing inclosing the perforated scouring case andforming an annular air passage h between the perforated case and thetight casing. This passage communicates with one eye of the fan by meansof openings h formedin the front head G and by a passage h2, and itreceives air through the perforated scouring case and through openingsh3 formedvin the rear head G2.A The heavier material which passesthrough the perforations of the scouring case drops into hoppers J,which communicate with the lower portion of the annular air passage 7L,while 6o the light dust is 'removed by the air current passing throughthe annular passage to the fan.

'K represents the discharge chamber arranged at thev rear end of .thescouring case and separated therefrom by a partition lo provided in itsupper portion with grain discharge openings k2. The grain is dischargedfrom the chamber lo by a spout Z, which delivers the grain into anairtrunk M connected with the 7o openings h3 of the rear head G2.

The scouring drum consists of a closed front head n, an open rear headn', and longitudinal scouring plates n2, which are secured to theperipheries of the heads and carry the teeth f. The trailing end of eachscouring plate considered in the direction in which the plates rotate,is arranged inline or nearly so, with the peripheries of the heads,while its advancing end is curved or inclined inwardly, 8o and projectsunderneath the trailing Yend of the next preceding plate, therebyforming longitudinal slots o in the scouring drumfor the passage of aircurrents from the interior of the drum to the perforated case.Y Air isadmitted to the interior of the scouring drum by an inner tube pextending centrally through the discharge chamber 7s, and tted with itsinner end into the open head of the scouring drum', and an outer tube peXtend- 9o ing through the air trunk M, and fitted with its inner endinto the outer end of the inner tube p, while its outer end is open. Theinner tube 1o is preferably cast Yintegrally with the partition laYforming the inner wall of the delivery chamber, and the outer tube pwith the rear head G2, as shown in Fig. l. The grain entering betweenthe revolving scouring drum and the perforated case at the headv of themachine is scoured while passing toroo ward the tail of the machine bythe rubbing l of the kernels against each other and against the scouringsurfaces of the drum and perforated case, thereby detaching the dust andother light particles from the kernels, The light particles which aredetached from the kernels, are carried in to theannular passage by theair currents issuing from the slots of the scouring drum and passingthrough the perforations ofthe scouring case. These air currents possessconsiderable force because the inwardly curved form of the scouringplates causes them to act as fan blades and to throwtlie'air from theinterior of the scouring drum toward the perforated shell, whereby theaction of the fan, which also causes air currents to flow outwardlythrough the slots of the scouring case is considerably increasedor'supplem'ented. These strong currentsot' air passing outwardly throughthebody of grain in the scouring case remove the impurities as soon asthey are detached from the kernels, and prevent them from accompanyingthe grain in its movements to- Ward the tail end of the machine, therebyinsuring a more perfect cleaning of the grain.

I claim as my inventionl. The combination with the perforated scouringcase, the perforated .scouring cylinder and the tight case surroundingthe scouring case, of a partition arranged in the scouring case at thetail end of the scouring cylinder and separated from the rear head'ofthe scouring case by a space forming a grain discharge chamber, an airtrunk arrangedon the outer side of said rear head, and communicatingwith the delivery spout of said discharge chamber, and an air inlet tubesurrounding the shaft of the scouring drum and extending from thescouring drum rearwardly through' said grain discharge chamber and saidair trunk, substantially as set forth.

2. The combination with the perforated scouring case, the perforatedscouring cylin- -der and the tight case surrounding the scourtubularouter section formed integrally with the rear head of the scouring case,substantially as set forth.

Witness my hand this 25th day of October,

VILLIAM lV.' HUN TsLEY.

Witnesses:

CARL D. FREEBURG, CHARLES G. HAMMOND.

